[RESOLVED] SimpleXML and concatenate XML files (yes, same schema)

[mrbaseball34]

I want to concatenate two XML files. Not sure what I'm doing wrong.

Using this code I get either
1. error saying that "Cannot add child. Parent is not a permanent member of the XML tree"
This happens when I change line 19 like this:
$rootnode->addChild($availnode);

2. XML that looks like this:

   <?xml version="1.0" encoding="UTF-8"?>
   <?xml version="1.0" encoding="UTF-8"?>
   <AvailableBatch>
                         <Date>10/07/2010</Date>
                         <UDT>1286410501</UDT>
                         <Type>Full</Type>
                         <
   
   
   
   
     /><
   
   
   
   
     /><
   
   
   
   
     /><
   
   
   
   
     /><
   
   
   
   
     /><
   
   
   
   
     /></AvailableBatch>
   

   Here's the code I'm using:

   <?php
       for($g=1;$g<=2;$g++) {
         $fileno = sprintf('%03d', $g);
         if(file_exists("stock_$fileno.xml")) {
           $stock_files[] = "stock_$fileno.xml";
         }
       }
   
   $xmlstring = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
                   <AvailableBatch>
                     <Date>".date('m/d/Y')."</Date>
                     <UDT>1286410501</UDT>
                     <Type>Full</Type>
                     </AvailableBatch>";
   $filename = "stock_001.xml";   
   // $xmlstring = file_get_contents($filename);
   $xml = new SimpleXMLElement($xmlstring);
   $rootnode = $xml->xpath("/AvailableBatch");
   foreach($stock_files as $fname) {
     $xmlstr = file_get_contents($fname);
     $xml_app = new SimpleXMLElement($xmlstr);
     $f = $xml_app->xpath("/AvailableBatch/Available");
     foreach ($f as $availnode) {
       $xml->addChild($availnode);
     } // foreach ($xml_app->AvailableBatch->children() as $availnode)
     unset($xmlstr);
     unset($xml_app);
   } // foreach($stock_files as $fname)
   echo $xml->asXML();
   //    file_put_contents("stock.xml", $xml->asXML());
   ?>
   

   Contents of stock_001.xml:

   <?xml version="1.0" encoding="UTF-8"?>
   <AvailableBatch>
     <Date>10/06/2010</Date>
     <UDT>1286410501</UDT>
     <Type>Full</Type>
     <Available>
       <Sku>427890</Sku>
       <Part>1001BSG</Part>
       <Qty>109</Qty>
       <Time>20:18:01</Time>
     </Available>
     <Available>
       <Sku>427870</Sku>
       <Part>1003BSS</Part>
       <Qty>110</Qty>
       <Time>20:18:01</Time>
     </Available>
     <Available>
       <Sku>427730</Sku>
       <Part>1004BSG</Part>
       <Qty>98</Qty>
       <Time>20:18:01</Time>
     </Available>
   </AvailableBatch>
   

   Contents of stock_002.xml:

   <?xml version="1.0" encoding="UTF-8"?>
   <AvailableBatch>
     <Available>
       <Sku>237770</Sku>
       <Part>AF400MD</Part>
       <Qty>3</Qty>
       <Time>20:18:03</Time>
     </Available>
     <Available>
       <Sku>237790</Sku>
       <Part>AF401LG</Part>
       <Qty>30</Qty>
       <Time>20:18:03</Time>
     </Available>
     <Available>
       <Sku>237810</Sku>
       <Part>AF401MD</Part>
       <Qty>174</Qty>
       <Time>20:18:03</Time>
     </Available>
   </AvailableBatch>
   

[mrbaseball34]

  /**
  * Pumps all child elements of second SimpleXML object into first one.
  *
  * @param    object      $xml1  SimpleXML object
  * @param    object      $xml2  SimpleXML object
  * @return  void
  */
  function simplexml_merge (SimpleXMLElement &$xml1, SimpleXMLElement $xml2) {
     // convert SimpleXML objects into DOM ones
     $dom1 = new DomDocument();
     $dom2 = new DomDocument();
     $dom1->loadXML($xml1->asXML());
     $dom2->loadXML($xml2->asXML());

 // pull all child elements of second XML
 $xpath = new domXPath($dom2);
 $xpathQuery = $xpath->query('/AvailableBatch/Available');
 for($i = 0; $i < $xpathQuery->length; $i++) {
     // and pump them into first one
     $dom1->documentElement->appendChild($dom1->importNode($xpathQuery->item($i), true));
 } // for($i = 0; $i < $xpathQuery->length; $i++)
 $xml1 = simplexml_import_dom($dom1);
  } // function simplexml_merge (SimpleXMLElement &$xml1, SimpleXMLElement $xml2)

Usage:

    $xmlstr = file_get_contents('stock_001.xml');
    $stock_xml = new SimpleXMLElement($xmlstr);

$xmlstr = file_get_contents('stock_002.xml');
$xml_app = new SimpleXMLElement($xmlstr);

simplexml_merge($stock_xml, $xml_app);

file_put_contents("stock.xml", $stock_xml->asXML());

[gooseflight]

	//---------------------------
	// Concatenates two or more XML files by creating a string
	// representation of XML elements then reloading string as XML

function combineXML($file)
{
	global $xmlstr;

	$xml = simplexml_load_file($file);

	foreach($xml as $element)
		$xmlstr .= $element->asXML();
}

$files[] = "firstfile.xml";
$files[] = "secondfile.xml";

$xmlstr = '<data>';  // You may wish to change this

foreach ($files as $file)
	combineXML($file);

$xmlstr .= '</data>';

//---------------------------
// Convert string to XML for further processing

$xml = simplexml_load_string($xmlstr);
$bytes = file_put_contents("combined.xml", $xml->asXML());

[mrbaseball34]

That won't work with my data, What I posted works great.

[gooseflight]

Eh? Produces the same output from your sample files:

<?xml version="1.0" encoding="utf-8"?>
<data>
	<Date>10/06/2010</Date>
	<UDT>1286410501</UDT>
	<Type>Full</Type>
	<Available>
		<Sku>427890</Sku>
		<Part>1001BSG</Part>
		<Qty>109</Qty>
		<Time>20:18:01</Time>
	</Available>
	<Available>
		<Sku>427870</Sku>
		<Part>1003BSS</Part>
		<Qty>110</Qty>
		<Time>20:18:01</Time>
	</Available>
	<Available>
		<Sku>427730</Sku>
		<Part>1004BSG</Part>
		<Qty>98</Qty>
		<Time>20:18:01</Time>
	</Available>
	<Available>
		<Sku>237770</Sku>
		<Part>AF400MD</Part>
		<Qty>3</Qty>
		<Time>20:18:03</Time>
	</Available>
	<Available>
		<Sku>237790</Sku>
		<Part>AF401LG</Part>
		<Qty>30</Qty>
		<Time>20:18:03</Time>
	</Available>
	<Available>
		<Sku>237810</Sku>
		<Part>AF401MD</Part>
		<Qty>174</Qty>
		<Time>20:18:03</Time>
	</Available>
</data>